Sink strainer assembly



May 21, 1968 J. DE YOUNG SINK STRAINER ASSEMBLY Filed Sept. 11. 1967 a; WM m f n WW W United States Patent 3,383,715 SINK STRAINER ASSEMBLY Jay De Young, Grand Haven, Mich., assignor to Michigan Brass Company, Grand Haven, Mich., a corporation of Delaware Filed Sept. 11, 1967, Ser. No. 666,792 3 Claims. (Cl. 4288) ABSTRACT OF THE DISCLOSURE A readily installed and removed sink strainer assembly having on the flanged strainer body a plurality of aflixed threaded depending studs around the lower neck of the body, to which are secured by wing nuts both a flanged retainer cup fitting around the body and a tailpiece retainer plate.

BACKGROUND OF THE INVENTION This invention relates to a sink strainer assembly.

Conventional sink strainer assemblies are diflicult to install or remove, as is well-known by those in the field. They employ special fittings requiring spanner wrenches, pipe wrenches or other like tools. Usually, the plumber must reach up into the sink with one hand to hold the strainer body from rotating while tightening the assembly from below the sink with the necessary tool. Various attempts have been or are being made in the trade in efforts to overcome these disadvantages, but none is sufiiciently satisfactory to date to cause those in the industry to make a major change in type of assembly employed. An important factor involved is relative cost in this highly competitive area.

SUMMARY OF THE INVENTION It is an object of this invention to provide a special sink strainer assembly capable of being installed or removed with relative ease, without special tools, and normally even Without any tools, capable of providing all of the operative features of conventional units, and capable of mass production at a competitive cost figure. The assembly employs simple wing nuts and studs in combination with interfitting retainer components in a manner that causes the assembly to be of greatly simplified construction.

The novel assembly has a flanged retainer cup positioned around and secured to the strainer body by studs afiixed to and depending from the strainer body and through the cup for attachment of wing nuts, and with a tailpiece retainer plate secured by additional such studs.

Additional advantages and objects will become apparent from the following detailed description, with the invention being defined by the attached claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the novel assembly;

FIG. 2 is a side elevational, partially sectioned view of the novel assembly shown installed;

FIG. 3 is a bottom end view of the assembly;

FIG. 4 is a top view of the assembly;

FIG. 5 is a sectional, side elevational view of the strainer body of the assembly;

FIG. 6 is a side elevational sectional view of the retainer cup of the assembly; and

FIG. 7 is a bottom view of the retainer cup in FIG. 6.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now specifically to the drawings, the complete sink strainer assembly 10 includes a strainer body 12, a retainer cup 14, a tailpiece 16, a tailpiece retainer 3,383,715 Patented May 21, 1968 'shown) which may be inserted into the strainer body in the sink.

The lower end of strainer body 12 is necked down to a throat or neck portion 32 which has a plurality of bottom orifices 34 therein.

Protruding downwardly, i.e., depending from the annular outer bottom portion 36 of the body is a plurality of four threaded studs 38 and 38a preferably spaced at equal intervals around the body, and extending beneath neck 32. These studs are affixed at their upper ends to the bottom of the body as by welding.

Two opposite ones of these threaded studs 38 secure retaining cup 14 to body 12, to force the elements together for securement thereof to the orificed bottom of a sink S. The cup element 14 basically has a cup shaped configuration, with a cylindrical peripheral wall 40 slightly larger in diameter than wall 26 of body 12, having an open top with an outwardly extending peripheral flange 42, and having an open bottom 44. The opening in the bottom is preferably ovular in shape, being straddled by a pair of bottom flange members 47 which have orifices 46 therein for receiving two of the studs 38. Retainer cup 14 secures body member 12 to the sink S around the sink opening by tightening of wing nuts 60 on studs 38 to force the bottom of cup 14 upwardly, squeezing gasket 22 against the sink bottom, and pulling the upper peripheral flange of body 12 down against the sink top.

Abutted against the bottom of neck 32, and specifically against annular gasket 20 is the upper end flange of conventional elongated tailpiece 16 secured in position by retaining plate member 18 having orifices on opposite ends to receive the alternate studs 38a. A second pair of wing nuts 60a is suitably attached to these alternate studs to bind the upper flange 21 of tailpiece 16 against gasket 20 and against neck 32 of the sink strainer body.

Preferably, member 18 is formed in an ovular shape and is formed from an ovular element die cut out of the bottom of cup 14 for economizing of material.

The operation of the novel assembly is readily apparent from the above description. When the assembly is to be mounted to a sink S, strainer body 12 is dropped down into the opening in the sink, cup 14 is positioned up beneath the sink bottom and around the body, with gasket 22 being positioned between the upper surface of the flange of the cup and the lower surface of the sink, and a pair of wing nuts 60' is then turned into place on studs 38 with ones fingers to tighten the unit. Next, tailpiece 16 is positioned through the opening in retainer plate 18, gasket 20 is positioned and these units are pressed against the lower end neck 32 by hand tightening of wing nuts 60:: on studs 38a.

Those having ordinary skill in the art will readily appreciate the unique simplicity of this apparatus, as well as specific advantages not necessarily spelled out above. It is also conceivable that minor structural variations might be made in the device without departing from the inventive concept which is intended to be limited only by the claims attached.

I claim:

1. A sink strainer assembly for a sink and tailpiece comprising: a strainer body having an open upper end with an annular flange, and a protruding orifice lower neck, said body having a plurality of parallel threaded studs afiixed to and depending therefrom and positioned around and spaced from said neck; a retainer cup for said body having a diameter and length greater than the diameter and length of said body to generally fit thereover, and having an upper end with a peripheral flange to cooperate with said body flange for receiving a sink portion and a gasket therebetween; said cup having a lower end opening to fit around said body neck and having bolt receiving orifices astraddle said opening and receiving at least two of said studs; removable fastening means mounted on the studs received in the orifices for biasing the cup upward and for securing the sink portion and gasket between the cup flange and body flange; a tailpiece retainer member for receiving a tailpiece, the retainer member having orifices receiving at least two of said studs; and removable fastening means mounted on the studs received in the orifices of the retainer member for securing the retainer member and tailpiece against the protruding References Cited UNITED STATES PATENTS 412,195 10/1889 Marker 4288 X 3,104,400 9/1963 Lantz et a1. 4287 3,231,903 2/ 1966 Cope 4287 3,327,326 6/1967 Friedman 4286 REUBEN FRIEDMAN, Primary Examiner.

C. DITLOW, Examiner. 

